The telltales are useless - when am I to turn a defrosting steak, if ever?  The "buzzer" signalling things is wimpy and way out of the range of hearing-deficient boomers.  And there is no way to increase the volume.  Fascia buttons are not backlight - very difficult to see in dim light.
And I can't figure out what's going on with the cavity fan - it runs while something is auto heating, but if you interrupt the auto feature the fan stops too usually leavong condensation in the chamber.  Shouldn't it suck that out?
In total the unit works fine - but it needs some imporovements on the UI.